#include <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include "libavutil/bswap.h"
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "mathops.h"
Go to the source code of this file.
Data Structures | |
| struct | PutBitContext |
Functions | |
| static void | init_put_bits (PutBitContext *s, uint8_t *buffer, int buffer_size) |
| Initializes the PutBitContext s. | |
| static int | put_bits_count (PutBitContext *s) |
| Returns the total number of bits written to the bitstream. | |
| static void | flush_put_bits (PutBitContext *s) |
| Pads the end of the output stream with zeros. | |
| void | align_put_bits (PutBitContext *s) |
| Pads the bitstream with zeros up to the next byte boundary. | |
| void | ff_put_string (PutBitContext *pb, const char *string, int terminate_string) |
| Puts the string string in the bitstream. | |
| void | ff_copy_bits (PutBitContext *pb, const uint8_t *src, int length) |
| Copies the content of src to the bitstream. | |
| static void | put_bits (PutBitContext *s, int n, unsigned int value) |
| Writes up to 31 bits into a bitstream. | |
| static void | put_sbits (PutBitContext *pb, int n, int32_t value) |
| static void av_unused | put_bits32 (PutBitContext *s, uint32_t value) |
| Writes exactly 32 bits into a bitstream. | |
| static uint8_t * | put_bits_ptr (PutBitContext *s) |
| Returns the pointer to the byte where the bitstream writer will put the next bit. | |
| static void | skip_put_bytes (PutBitContext *s, int n) |
| Skips the given number of bytes. | |
| static void | skip_put_bits (PutBitContext *s, int n) |
| Skips the given number of bits. | |
| static void | set_put_bits_buffer_size (PutBitContext *s, int size) |
| Changes the end of the buffer. | |
Definition in file put_bits.h.
| void align_put_bits | ( | PutBitContext * | s | ) |
Pads the bitstream with zeros up to the next byte boundary.
Definition at line 42 of file bitstream.c.
Referenced by encode_block(), encode_frame(), encode_picture_ls(), ff_copy_pce_data(), ff_flv_encode_picture_header(), ff_h261_encode_picture_header(), flush_put_bits(), h263_encode_picture_header(), h264_write_nal_unit(), put_bitstream_info(), put_header(), rv10_encode_picture_header(), write_slice_end(), xsub_encode(), and xsub_encode_rle().
| void ff_copy_bits | ( | PutBitContext * | pb, | |
| const uint8_t * | src, | |||
| int | length | |||
| ) |
Copies the content of src to the bitstream.
| length | the number of bits of src to copy |
Definition at line 61 of file bitstream.c.
Referenced by copy_bits(), encode_thread(), ff_mpeg4_merge_partitions(), merge_context_after_encode(), save_bits(), and svq1_encode_plane().
| void ff_put_string | ( | PutBitContext * | pb, | |
| const char * | string, | |||
| int | terminate_string | |||
| ) |
Puts the string string in the bitstream.
| terminate_string | 0-terminates the written string if value is 1 |
Definition at line 51 of file bitstream.c.
Referenced by jpeg_put_comments(), and mpeg4_encode_vol_header().
| static void flush_put_bits | ( | PutBitContext * | s | ) | [inline, static] |
Pads the end of the output stream with zeros.
Definition at line 96 of file put_bits.h.
Referenced by aac_adtstoasc_filter(), aac_encode_frame(), alac_encode_frame(), dca_convert_bitstream(), dnxhd_encode_thread(), dv_decode_video_segment(), dv_encode_video_segment(), encode_bitstream(), encode_block(), encode_ext_header(), encode_frame(), encode_init(), encode_picture_lossless(), encode_picture_ls(), encode_superframe(), encode_thread(), escape_FF(), ff_adts_decode_extradata(), ff_adts_write_frame_header(), ff_copy_bits(), ff_mjpeg_decode_frame(), ff_mjpeg_encode_picture_trailer(), ff_mpeg4_merge_partitions(), gif_image_write_image(), h264_write_nal_unit(), jpeg_put_comments(), jpeg_table_header(), main(), merge_context_after_encode(), mov_write_ac3_tag(), MPV_encode_picture(), output_frame_end(), output_frame_footer(), output_frame_header(), pnm_decode_frame(), put_audio_specific_config(), put_line(), put_main_header(), put_pack_header(), put_swf_matrix(), put_swf_rect(), put_system_header(), save_bits(), svq1_encode_frame(), svq1_encode_plane(), swf_write_header(), vorbis_encode_frame(), wmavoice_decode_packet(), write_slice_end(), write_streaminfo(), and xsub_encode().
| static void init_put_bits | ( | PutBitContext * | s, | |
| uint8_t * | buffer, | |||
| int | buffer_size | |||
| ) | [inline, static] |
Initializes the PutBitContext s.
| buffer | the buffer where to put bits | |
| buffer_size | the size in bytes of buffer |
Definition at line 60 of file put_bits.h.
Referenced by aac_adtstoasc_filter(), aac_encode_frame(), alac_encode_frame(), dca_convert_bitstream(), decode_init(), dnxhd_encode_thread(), dv_decode_video_segment(), dv_encode_video_segment(), encode_bitstream(), encode_block(), encode_ext_header(), encode_frame(), encode_init(), encode_picture_lossless(), encode_picture_ls(), encode_thread(), ff_adts_decode_extradata(), ff_adts_write_frame_header(), ff_init_cabac_encoder(), ff_lzw_encode_init(), ff_mjpeg_decode_frame(), ff_mpeg4_init_partitions(), flac_encode_frame(), gif_image_write_image(), h264_write_nal_unit(), main(), mov_write_ac3_tag(), MPA_encode_frame(), MPV_encode_picture(), output_frame_header(), pnm_decode_frame(), put_audio_specific_config(), put_line(), put_main_header(), put_pack_header(), put_swf_matrix(), put_swf_rect(), put_system_header(), save_bits(), svq1_encode_frame(), svq1_encode_plane(), swf_write_header(), vorbis_encode_frame(), wmavoice_decode_packet(), write_streaminfo(), and xsub_encode().
| static void put_bits | ( | PutBitContext * | s, | |
| int | n, | |||
| unsigned int | value | |||
| ) | [inline, static] |
Writes up to 31 bits into a bitstream.
Use put_bits32 to write 32 bits.
Definition at line 149 of file put_bits.h.
Referenced by aac_adtstoasc_filter(), aac_encode_frame(), alac_encode_frame(), align_put_bits(), asv1_encode_block(), asv1_put_level(), asv2_encode_block(), asv2_put_bits(), asv2_put_level(), bit_copy(), copy_bits(), dca_convert_bitstream(), dnxhd_encode_block(), dnxhd_encode_dc(), dnxhd_encode_thread(), dv_encode_ac(), dv_encode_video_segment(), encode_bitstream(), encode_block(), encode_dc(), encode_exp_vlc(), encode_ext_header(), encode_frame(), encode_individual_channel(), encode_mb_skip_run(), encode_ms_info(), encode_picture_ls(), encode_pulses(), encode_scalar(), encode_scale_factors(), encode_superframe(), encode_window_bands_info(), ff_adts_decode_extradata(), ff_adts_write_frame_header(), ff_copy_bits(), ff_flv2_encode_ac_esc(), ff_flv_encode_picture_header(), ff_h261_encode_mb(), ff_h261_encode_picture_header(), ff_h263_encode_mba(), ff_h263_encode_motion(), ff_mjpeg_decode_frame(), ff_mjpeg_encode_dc(), ff_mjpeg_encode_picture_header(), ff_mjpeg_encode_stuffing(), ff_mpeg1_encode_slice_header(), ff_mpeg4_encode_video_packet_header(), ff_mpeg4_merge_partitions(), ff_mpeg4_stuffing(), ff_msmpeg4_encode_block(), ff_put_string(), ff_wmv2_encode_mb(), ff_wmv2_encode_picture_header(), ff_write_quant_matrix(), floor_encode(), gif_image_write_image(), h261_encode_block(), h261_encode_gob_header(), h261_encode_motion(), h263_encode_block(), h263_encode_gob_header(), h263_encode_mb(), h263_encode_picture_header(), h263p_encode_umotion(), h264_write_nal_unit(), jpeg_put_comments(), jpeg_table_header(), ls_encode_run(), ls_store_lse(), main(), mov_write_ac3_tag(), mpeg1_encode_block(), mpeg1_encode_mb_internal(), mpeg1_encode_motion(), mpeg1_encode_picture_header(), mpeg1_encode_sequence_header(), mpeg4_encode_block(), mpeg4_encode_dc(), mpeg4_encode_gop_header(), mpeg4_encode_mb(), mpeg4_encode_picture_header(), mpeg4_encode_visual_object_header(), mpeg4_encode_vol_header(), MPV_encode_picture(), msmpeg4_encode_dc(), output_audio_block(), output_frame_footer(), output_frame_header(), output_residual(), output_subframe_lpc(), output_subframes(), pnm_decode_frame(), put_audio_specific_config(), put_bits32(), put_bitstream_info(), put_cabac_bit(), put_codebook_header(), put_codeword(), put_floor_header(), put_header(), put_huffman_table(), put_ics_info(), put_main_header(), put_marker(), put_mb_modes(), put_pack_header(), put_qscale(), put_residue_header(), put_sbits(), put_swf_line_edge(), put_swf_matrix(), put_swf_rect(), put_system_header(), put_xsub_rle(), quantize_and_encode_band_cost(), rv10_encode_picture_header(), rv20_encode_picture_header(), save_bits(), set_te_golomb(), set_ue_golomb(), set_ur_golomb(), set_ur_golomb_jpegls(), svq1_encode_frame(), svq1_encode_plane(), svq1_write_header(), swf_write_header(), vorbis_encode_frame(), write_compressed_frame(), write_frame_header(), write_streaminfo(), and write_utf8().
| static void av_unused put_bits32 | ( | PutBitContext * | s, | |
| uint32_t | value | |||
| ) | [static] |
Writes exactly 32 bits into a bitstream.
Definition at line 275 of file put_bits.h.
Referenced by put_float(), put_main_header(), put_pack_header(), put_system_header(), and write_frame_header().
| static int put_bits_count | ( | PutBitContext * | s | ) | [inline, static] |
Returns the total number of bits written to the bitstream.
Definition at line 84 of file put_bits.h.
Referenced by aac_encode_frame(), alac_encode_frame(), dca_convert_bitstream(), dnxhd_encode_thread(), dv_decode_video_segment(), dv_encode_video_segment(), encode_bgr_bitstream(), encode_block(), encode_frame(), encode_init(), encode_mb(), encode_mb_hq(), encode_picture(), encode_picture_lossless(), encode_picture_ls(), encode_superframe(), encode_thread(), escape_FF(), ff_copy_bits(), ff_copy_pce_data(), ff_mjpeg_encode_stuffing(), ff_mpeg4_merge_partitions(), ff_mpeg4_stuffing(), flac_encode_frame(), get_bits_diff(), h264_write_nal_unit(), merge_context_after_encode(), mpeg1_encode_picture_header(), MPV_encode_picture(), output_frame_footer(), output_frame_header(), put_bits_left(), put_bitstream_info(), put_main_header(), skip_put_bytes(), svq1_encode_frame(), svq1_encode_plane(), vorbis_encode_frame(), writtenBytes(), xsub_encode(), and xsub_encode_rle().
| static uint8_t* put_bits_ptr | ( | PutBitContext * | s | ) | [inline, static] |
Returns the pointer to the byte where the bitstream writer will put the next bit.
Definition at line 292 of file put_bits.h.
Referenced by encode_picture_lossless(), encode_superframe(), encode_thread(), ff_copy_bits(), ff_h261_encode_picture_header(), ff_mpeg4_init_partitions(), gif_image_write_image(), h263_encode_picture_header(), jpeg_put_comments(), jpeg_table_header(), MPA_encode_frame(), MPV_encode_picture(), output_frame_end(), put_pack_header(), put_swf_matrix(), put_swf_rect(), put_system_header(), and swf_write_header().
| static void put_sbits | ( | PutBitContext * | pb, | |
| int | n, | |||
| int32_t | value | |||
| ) | [inline, static] |
Definition at line 265 of file put_bits.h.
Referenced by alac_encode_frame(), asv1_put_level(), dv_encode_video_segment(), encode_block(), ff_flv2_encode_ac_esc(), ff_h261_encode_picture_header(), ff_mjpeg_encode_dc(), ff_msmpeg4_encode_block(), h261_encode_block(), h263_encode_block(), h263_encode_picture_header(), mpeg1_encode_block(), mpeg1_encode_mb_internal(), mpeg1_encode_sequence_header(), mpeg4_encode_block(), output_subframe_constant(), output_subframe_fixed(), output_subframe_lpc(), output_subframe_verbatim(), put_header(), put_line(), rv20_encode_picture_header(), set_ur_golomb_jpegls(), and write_compressed_frame().
| static void set_put_bits_buffer_size | ( | PutBitContext * | s, | |
| int | size | |||
| ) | [inline, static] |
Changes the end of the buffer.
| size | the new size in bytes of the buffer where to put bits |
Definition at line 338 of file put_bits.h.
Referenced by ff_mpeg4_init_partitions(), and ff_mpeg4_merge_partitions().
| static void skip_put_bits | ( | PutBitContext * | s, | |
| int | n | |||
| ) | [inline, static] |
Skips the given number of bits.
Must only be used if the actual values in the bitstream do not matter. If n is 0 the behavior is undefined.
Definition at line 322 of file put_bits.h.
Referenced by ff_h263_encode_motion_vector(), and mpeg4_encode_blocks().
| static void skip_put_bytes | ( | PutBitContext * | s, | |
| int | n | |||
| ) | [inline, static] |
Skips the given number of bytes.
PutBitContext must be flushed & aligned to a byte boundary before calling this.
Definition at line 305 of file put_bits.h.
Referenced by escape_FF(), and ff_copy_bits().
1.5.8